Apache is a free and open-source cross-platform web server software.
BEM (Block, Element, Modifier) is a naming convention for classes in HTML and CSS what was developed by Yandex.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Swiper is a JavaScript library that creates modern touch sliders with hardware-accelerated transitions.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.
Yandex.Metrica is a free web analytics service that tracks and reports website traffic.